Bending machine



April 24, 1928. 1,666,909

T. F. PHILIPPX BENDING MACHINE) Filed Sept. 10, 1923 s Sheets-Sheet 1 5& f?

.20 T/zeadarefiP/zz'lzf April 24,-1928. 1,666,909

T. F. PHILIPPI BENDING MACHINE Filed Sept. 10, 1625 s Sheets-$heet 2 April 24, 1928; 1,666,909

' T. F. PHILIPPI BENDING MACHINE Filed Sept. 10, 1923 3 Sheets-Sheet 3 m a0 merge/7M Patented Apr. 24, 1928.

PATENT OFFlCEl.

THEODORE F. PHILIPPI. OF EAST ST. LOUIS, ILLINOIS.

BENDING Application filed September This invention relates to new and useful improvements in machines for bending or circling sections of flanged irons such as angle irons, T-irons, etc., and the objects of the invention are to provide a simple and strong machine which will efiiciently term or shape irons of various cross sections into circular or siinilarshapes.

Further objects of the invention are to provide a machine of the class described ha v ing a wide range of adjustments whereby irons of various shapes and sizes may be bent in proper form of desired dimensions and to provide readily operated means tor regulating said adjustments.

Still further objects of the invention are to provide means for preventing the sections ol material from being distorted while operated upon by the forming members and to pro vide simple andv automatically adjustable means for actuating the forming members.

Other objects of the invention are to provid. a cutting attachment for the machine "for cutting the material into sections of proper lengths, and to generally improve upon and simplify the construction of the machine of the class described.

In the accoi'npanying drawings Figure 1 is a side elevation of the machine.

Fig. 2 a plan view of a-section of angle iron formed into a circular shape and having an inwardly presented annular flange.

Fig. 3 is a similar view with the flange presented outwardly.

Fig. is a detail view of the forming members and showing a section of, angle iron being operated upon to form a ring or hoop having an inwardly presented flange.

Fig. 5 is a similar view showing a T- shaped section of material being operated upon.

Fig. 6 is a detail View of the forming mechanism and showing a section of angle ironbeing operated upon to form a member having an outwardly presented flange.

Fig. 7 is a front end elevational view of the machine.

Fig. 8 is a detail view taken on .line S-8 of Fig. 1 and showing means for regulating the position of the displaceable feed roller.

Fig. 9 is a vertical cross section taken on line 99 of Fig. 1.

MACHINE.

10. 1923. Serial No. 6612916.

Fig. 10 is a horizontal cross section taken on line 10l0 of Fig. 1.

Fig. 11 is a horizontal cross section taken on line 1111 of Fig. 7.

Fig. 12 is a fragn'iental detail view of the manually operated member utilized for controlling the adjustment of the forming roll.

Heretofore, in machines designed for rol1- iug or circling angle irons, the rollers were driven by intermeshing gears and in adjnst ing such rollers for various sized work, the gears would be moved outof pitch and could not operate in all positions.

Consequently. in most of the machines only the feed rollers would be driven and the bending roller would run idle. This arrangement is not satisfactory for various reasons. for instance, more power is required to operate the teed rollers and the latter have a tendency to slip and the bending roller does not operate as accurately as where it is positively driven.

In the present invention. all of the rollers including the bending roller are positively driven in the desired direction by a flexible member preferably a chain operating over sprocket wheels fixed to the respective roller shafts.

This flexible chain drive permits easy adjustment of the rollers, without the necessity of adjusting the driven element or chain, as thclatter by virtue of its peculiar arrangement is auton'iatically adjusted in cooperation with the rollers, a counter weight being provided to take up the slack in the chain and maintain the latter taut. Thus sa d chain is held under proper tension at all times and exerts proper pull on each roller shaft and the slipping of the rollers during the rolling process is successfully prevented.

.Reterring by numerals to the accompanying drawings, 10 indicates the base of the machine on which are supported "front end frame 11 and rear end Frame 12. A shaft 14 is journaled in suitable bearings formed in said end frames and the rear end of said shaft is provided with a suitable clutch 15 controlled by handle 16 for effecting a driving engagement with a belt driven pulley 17. A pinion 18 is Fixed to shaft 1 1 and meshing with this pinion is a gear 19 which latter is arranged on a shaft 20 journaled in i suitable hearings in base 10. Counter shaft 20 has a pinion 21. which is in mesh with a gear 22 carried by shaft 2% which latter is journaled in. suitable hearings in the end frames 11 and 12. The forward end of shaft 2% projects outwardly from end frame 11 and has arranged thereon a feed roller 25 which is held in position by a nut 26 screwed on the threaded portion 24L of the shaft 24;.

End frames 11 and 12 are provided. with vertically disposed guidevays 27 in which are slidahly arranged bearings 28'. A shaft 29 is journaled in said bearings and its forward end which projects outwardly from the bearing arranged. in end frame 11 has mounted thereon a: feed roller 30 which is held in position on said shaft by a nut 31 screw-threaded on the threaded portion of shaft 29.

Feed members 25 and 30' preferably consist of separable sections 25*" and 30" respec tivcly arranged in juxtaposed relation and adapted to be spaced from each other by means of spacers or washers 32 to accommodate the flanged or lateral portions of the se ons of material; An extension. 3% which is lined to or formed integral with the rear end frame 12 forms a housing; for the gear 22 and pinion 18 and is provided with a holder an which is adapted to receive a series of washers 32 so that a supply of washers of various thicknesses: is always on hand within easy reach of the operator.

Shaft 29 and roller 30' are ad'nstable relative to roller 25 by means of a horizontally disposed shaft 35 which is journal-ed in bearings 36- formed in the upper ends of end frames 11 and 12 and carries at its ends eccentrics 37. Engaging these eccentrics are straps 38 having depending lugs 39 which are pivotally connected to the respective hearings 28 of shaft The rear end of shaft 35 has fixed thereto a handle 4 0 by means of which shaft 35 may be rocked thereby raising or lo-wr in g rollers 30. In order to prevent excessive downward move ment of rollers 30 and to maintain the same in their adjusted positions relative to rollers 25, one of the straps, preferably the rear one. is provided with a leg 38 in which is tltireaded a screw 41, the lower end of which is adapted to rest on a lug 1.? formed on and projecting outwardly from the rear end frame 12. The forward strap is split and is providedwi-th outwardly projecting: lugs 38 and fixed to one of said lugs is a U shaped piece L2 in the ends of which is arranged a cam 44 provided with handle 45.

This cam bears against the other one of said lugs so that when handle 45 is actuated in the proper direction, strap 38 is clamped se curely to the respective eccentric 37.

End frames 11 and 12 are provided with guideways 46 which are arranged on one side of feed rollers 25 and 30 and are angularly disposed relative thereto. Bearings 47 are slidably arranged in said guideways and a shaft l8 is journaled in said bearings and itsfo-rward end carries a forming roller 19 is secured to end frames 11 and 12.. Rod 54 i has fixed thereon a sprocket wheel 56' which is in engagementwith sprocket chain 52 so that when bar 54: is rotated, sprocket wheel 56 operates chain 52 which drives sprocket wheels 51, thereby rotating members 50. These members have threaded engagement with their respective hearings and the pitch of the threads is the same as the pitch of the thread of the lower end of bar 54: so that said bar and members travel. at the same speed. The longitudinal n'iovem-ent of bars 50 act-uates bearings 47 and cause the positioning of formingroller 49 relative to the material locingfcd by feed rollers 25 and 30.

Bar 54 which is manually operated by a handle 57 is provided with suitable graduations 58 by means of which the diameter of the ring to be formed may be determined.

The rear end of shaft 48 projects outwardly from the rear end of fame 12 and has fixed thereto a sprocket wheel 59 and the shafts 24 and 29 have fixed thereon sprocket wheels 60 and 61, respectively, and passing over these sprocket wheels and driving the respective shafts 29 and 48 is a sprocket chain 62, as shown in Fig. 9.

In order to permit relative movements of shafts 29 and l8 and maintain their respective sprocket wheels in proper driving; engagement with the chain, a weight 64; is suspended: from the chain and maintains the same under proper tension... This weight is provided with a suitable roller 65 over which said chain operates and idlers 67 and 68 are suitably supported on end frame 12 in order to provide proper engagement of the chain with sprocket wheels 59 and 60.

The forward. end frame 11v is provided ad'- j acent to feed rollers 25 and 30 with a suit able guideway in which is slidably arranged a block 69'. The forward end of this block has fixed thereon a guide member 70 which is designed to guide the material to be formed to the forming rollers. This plate is adjustable by means of a hand operated wheel 71 which is arranged on. the threaded end of a pin 72 seated in end frame 11 and. bears against the rear end of block 69'. By

turning wheel 71 in. the proper direction, block 69 and plate 70 are moved forwardly while spring 74 interposed between the rear end of member 69 and end frame ll it'orces said block and plate 70 rearwari'lly.

A sliding block 75 provided at its forward end with a guide plate 0' abutment member 76 is slidably arranged in end frame ll adjacent to forming roller it and is designed to engage the formed portion of the material as it is fed forward by the feed rollers and prevent its distortion or lateral displacement. This block is adjustable by meaps ot a hand wheel "I"? which is threaded on a pin 78 projecting from end frame 11 and engaging the inwardly turned portion of said block. A spring 79 :t'orces said block inwardly and holds it in engagement with hand wheel 77.

Where sections of material are formed into circles of smaller diameter, these would not be engaged by plate 76 on account of the short sections being used and an auxiliary guide or abutmentmember 81) is utilized for this purpose. This member is arranged above forming roller -l9 and is carried by the forward end of a rod 81 which is slidably arranged in a projection formed on bearing 47. The inner end of this rod has threaded engagement with a hand wheel so that by turning said hand wheel, rod 81 and plate St) are moved forwardly or rearwardly as desired. Hand wheel 82 is provided with an annular groove 84 which is in engagement with a portion 79 of sliding member 79. hen hand wheel 82 is rotated, it is held against lateral movement through the inter engagement of groove 84 with projection 79. thus providing adjustment of member independently of adj nstment of member 76. but when hand wheel 77 is operated. block 7!) is moved in the proper direction and through the interengagement ot' portion 79 with groove Set carries hand wheel 82 with it. thereby providing simultaneous adjustment of members 76 and 80.

The cutting attachment tor cutting sections of material of the desired length consists of a member arranged on the machine adjacent to the rear end "frame 12 and projecting outwardly therefrom and ot a cutting member 86 operated from the main shaft of an arm 87. A stationary cutting or shearing member 88 is arranged on frame and cooperates with the movable member 86. Frame 85 is provided with a supporting bracket 89 and a rearwardly projecting rod 90 having adjustably mounted thereon a stop arm 91 by means of which sections of material of proper length are cut.

I claim:

l. A bending machine comprising a plu rality ot' cooperating rollers adapted toreceive and curve bars of metal, flexible driving means for positively actuating all of said bars, a

rollers, mechanism for adjusting one of said rollers relative to the others to regulate the cur 'ature ot the bar, said mechanism including a longitin'linally movable member and means cooperating with said longitudinally movable member for indicating the extent of said curvature.

A bendingmachine comprising a pair or" cooperating rollers for receiving and teeding sections of angle iron, a forming roller arranged adjacent to and in cooperative relation with said feed rollers and adapted to engage and curve said sections of iron as the same are fed :l'orward by said teed rollers, the said forming roller being adjustable relative to said feed rollers to regulate the diameter of the curve, flexible driving connections for said feed rollers and said form- .ing roller, and antoi'natic take-up means for maintaining said driving connections at all times in operative engagement with said rollers.

t A bending machine comprising in combination a pair of cooperating feed rollers adapted to feed 'torward sections of metal movable bearing box for one of said rollers, an eccentrically mounted member having pivotal connection with said box, a lever for actuating said eccentric member, a forming roller cooperating with said feed rollers "for engaging and curving the sections of material led to it by said teed rollers, said forming roller being :uljustable relative to said feed rollers to vary the curvature of said material, abutment members arranged adjacent to said rollers for guiding the material while it is being operated upon, and flexible means for positively aciuatiug all (it said rollers.

l. A bending machine comprising a pair oi' cooperating feed rollers adapted to. receive and feed torward sections of metal bars, a torming roller arranged in cooperative relation with said teed rollers and adapted to engage and curve the material ted to it by said feed rollers, a series of guide members arranged adjacent to said rollers for guiding the material operated upon, flexible means tor driving said roll ers. and manually operable means for adjusting certain of said guide members independently ot' the others.

5. A bending machine 'comprising feed, mechanism adapted to receive and feed forward sections of angle irons, a forming roll or arranged in cooperative relation with said feeding mechanism for curving said sections of angle irons, a. guide member arranged in cooperative relation with said 't'orming roller -t'or guiding the material while it is being operated upon, means for adjusting said guide member, an auxiliary guide member arranged adjacent to said forming roller for engaging and guiding comparatively short sections of material,

lid

means for adjusting said armiliary wmemberindependently of the other in men er.

,ing machine comprising 'lkmding "c. zi iechan-isni adapted to rec 7c and feed low uard seiJJtioru-i oi? flanged irons, a torniing r arranged in cooperative relation with, feeding mecl'ia xsni for engaging and ng the sections oi: n'ialerlal ted to ii, relation with on the matering lateral ry guide mems'rl torining roll.-

y short sectioi'is sii'nultaneously d said guide shaft in cooperative relation with said feed rollers, sprocket wheels l'lXOd to said shafts, an endless chain operating in said wheels and driving said shafts, means tor operating said chain, and a counter-weight engaging said chain for maintaining it under tension and in proper driving engagement with said wheels at all times.

8. A bending machine comprising in C0111- bination. a stationary iran1e,a bearing box fixedly mounted therein. a shaft journaled in said bearing b X. a feed roller lined to one end of said shaft. a movable bearing be}: mounted in said frame for vertical movement, a shaft journaled in said bearing box in vertical plane with the first sha-itt, a second :leed roller fixed to 'sai d last-mentioned shaft in cooperative relation with the first roller, :1 bearing box mounted in. said. "frame for movement in angular direction relative to said feed rollers, a shaft journaled in said angularly movable bearing box, a roller fixed on said shaft and disposed in the path of the work "lied by said "feed rollers and adapted to curve said work, said angularly movable bearing be): being adjustable to rula-te the curvature oil? said work, a sprocket wheel fixed to each oi? said shafts, a. cirzin 'lor engagingand positively driving all messes of said sprocket wheels, and a counterweight including an idler for engaging said chain and maintaining it in proper driving relation with all of said sprocket wheels and at the same time permitting relative movement of the movably mounted shafts.

9. A bending machine comprising in combination a pliiirality o'l GO()] ')6l'2ltlllg rollers adapted to receive and curve sections of metal bars, one of said rollers being adj ush able in straight line, and angularly relative to the plane passing through the axes of the other rollers to vary the distance between it and the pointot worl; engagement of the other rollers for regulating the curvas ture of the work, means including a flexible chain drive for positively actuating all of said rollers, laterally disposed abutment nien'ibers for guiding the work when 0perated upon. by said rollers and means for adjusting said abutment members laterally.

10. A bending machine comprising in combination a pair of cooperating feed roll ers adapted to receive and feed forward sections or metal bars, the axes of said feed rollers being disposed in a vertical plane, means including a manually operable lever for quickly displacing one of said rollers in said vertical plane, a forming roller coo ierating with said feed rollers and adjustable angularly relative to the plane passing through the axes oi. the other rollers, flexible driving means for positiv ly actuating all oili' said rollers at all times aml a counterweight for maintaining said driving means taut.

11. A bending machine comprising in combination a pair of cooperating feed rollers, a forming roller arranged. in cooperative relation therewith for operating upon sections of material l ed to it by said feed rollers, said forming roller being adjustable angularly relative to the plane passing through the axes of the other rollers, guide members arranged adjacent to said rollers for guiding the material laterally, actuating means including a flexible member for positively driving all of said rollers and means for adjusting said guide members laterally relative to said rollers.

In testii'nony whereof I hereunto atlix my signature this 6th day of Sept, 1923.

THEODORE F. PHILIPPI. 

